Regrinding guild rep doesn’t seem quite as onerous as people think, unless you just hate dailies [and I know some people are of that mind and hey, it’s cool – we all gotta play our own ways!]. But there are a number of ways to regain guild reputation. In fact, you can easily be exalted with your new guild in about 4-5 weeks, more if you’re more casual about raids/dailies. Either of the BOA tabards will enhance rep gained per boss/instance/daily. You can either bring it with you or gain it at Friendly [blue tabard for 50% gains] or Honored [purple tabard for 100% rep gains].
1. Raids – Guild raids give quite a bit of rep. Hubby and I have been attending our new guild’s farm night where they blaze through T11 raids. Alts are welcome, but we’ve honestly been glad to just play our mains and gain the Valor points and Guild rep that comes with it.
2. Guild Dungeons. Five mans with three or more guildies will give Guild Rep [more with more guildies]. We’ve managed to catch a few of these as well and it’s been really profitable reputation-wise.
3. Daily Quests – While one might think that the Molten Front dailies would be ideal, most of the dailies actually inside the Molten Front are unaffected by the Guild Tabards. So while the outside quests do provide double rep with the tabard, and are worth doing, I’d skip the inside ones unless you aren’t finished opening everything up. The Tol Barad quests are actually very good for guild rep as all of them become double rep with the tabard.
EDIT: Apparently zoning into the Molten Front deactivates the tabard and if you remove it and re-equip it, the tabard gains will work appropriately.
You Yank It, You Tank it: Blog of a Tanking Death Knight Lady 
Askevar,
I occasionally creep on your blog because I’m curious about other dk-lovin’ ladies. I just read this post and I wanted to point out to you, if you hadn’t realized yet, that the Molten Front dailies DO work with the guild tabards. They’re just bugged so that when you go through the portal to enter the Molten Front, the tabards deactivate. You can unequip/reequip to reactivate and go right on receiving that sweet, sweet guild xp!
Arenas – specifically 2s – are another really good way to build guild rep! I’m not much of a PVPer, that’s my husbands domain more so than mine, but each week on a day we know overall guild xp is going to be low, we grind out some arenas to boost our own rep as well as the guild’s xp. We do 2s because they’re the easiest and the fastest.
Keep on bloggin – I enjoy reading!
Thanks for setting me straight on that! I didn’t realize you could unequip and re-equip to fix it. 😀 I’ll keep that in mind should I need it again as I hit exalted with the new guild on Tuesday.
Thanks for reading 😀